Automatic advancing and speed-indicating coupling.



E. C. NEWTON.

AUTOMATIC ADVANGING AND SPEED iNDlCATING COUPLING.

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AUTUMATIC ADVANCING AND S'BEED-INDiCATING- COUL'TLIE'! Specification of Letters Patent.

Application files August a, 1915. Serial No. users.

T at? whom it may concern:

Be it known that I, EnwAso G. NERVTON, a citizen. of the United States, and resident Kof Marysville, county of Yuba, State of This indicatingmeans may also be utilized of novelty will be apparent from the folfor showing the speed of rotation of the coupling.

Other uses of the device and the features lowing description taken in connection with the accompanying drawings in which:

Figure 1 is a longitudinal section through a coupling embodying my invention; Fig. 2 is a section on the line 2-2 of Fig. 1, the

parts being shown in the position which they assume when the coupling is not rotating; Fig. 3 is a. view similar to Fig.2, but- ,showing one position of the parts when rotating; Fig. 4 is a side elevation of'the coupling with the parts in the-position shown in Fig. 3; Fig. 5 is a view similar to Fig. i with the Fig. 2.

Referring to the drawings, 10 in'dicatesla driving shaft and 11 a driven shaft. The

' driving shaft 10 carries a disk 12 having a 11 carries a disk 18 which is series of axial extensions 21, 22, 23 and 24;.

on one side thereof,;these extensions being preferably arranged 1n a symmetrical manner and each having asurface 25 arranged substantially as indicated. The driven shaft referably journaled tl1ereon-at-19,but whic for :cer-

tain purposes may be rigidly connected therewith.- When the disk 18 isjourrialed onthe shaft 11 it is'connectedwith the lat- -t'erfhy means of er-ratchet 20 and one or 5 more pawls 21 so that-theshaft. and disk have-relative rotation one direction,

parts in the position shown in but are so connected to be held against relative rotation in the opposite direction. The disk 18 has axialextensions 13, 1 1, and 16 preferably similar to the extensions 21, 22, 23 and 24 and symmetrically placed with reference to the latter to form pairs of cooperating extensions as'clearly shown in Figs. 2 and 3. The extensions 13, 14-, 15 and 16 have surfaces 17 opposing the surfaces 25 and in angular relation to the latter so as to form substantially V-shaped spaces between the eoiiperating extensions as ciearly shown in Fig. 2. Arranged between each pair of cooperating extenslons and in en- 'gageme'nt with the surfaces 17 and 25 there.

of are the centrifugal elements 26, preferably of cylindrical or spherical form so as to be of circular cross-section.

With the parts shown in Fig. 2 it will be seen that the centrifugal elements or disks 26 form an operative connection be v tween the cooperating extensions and tran mit power from the disk 12 to the disk 18.

The normal direction of the rotation of the parts is indicatedby arrows in Figs. 2 and 3 and from these figures it will be evident that, as the speed of-rotation increases from zero the centrifugal elements 26 will he .moved outwardly in a radial direction and separate the extensions with which they cooperate and thus produce a relative angular movement between the disks 12 and 18. From the position of the centrifugal ele ments 26 shownin Fig. 3 it will be evident that thecooperating extensions of the disks 12 and 18 have been widely separated. In order tore'store the parts to the position shown infFig.2 when the of rotation is reduced, a suitable spring 2'? is arranged between the extensions ld'and 21 and similar springs 28, 29 and 39 are arranged between the other extensions iii the manner shown in Figs. 2 and 3.

It will be evident from Figs. 2 and 8 that,

with a constant force transmitted between the driving and driven parts of the coupiing, the angular relation of the disks 12 and-18 will, be in accordanoe'with the speed of iota tionbecause the position of the centrifugal elements 26 varies with the speed ofarotation. It is therefore possible toutilize this change in the angular relation of the disks 12 and 18 to indicate the speed and the amount of advance of the driven member of the cou-- 31 which incloses the extensionsof the disks and also surrounds a plate 32 on the disk 18. 'The flange 31 is provided with one or more openings or windows 33 and the flange 32 is provided with one or more triangular spots or markings 34, preferably of red or other vivid color, and cooperating with said openings, these markings being concealed by the flange 31, when the parts are in the position shown in Fig. 2 and Fig. As the disks 12 and 18 are rotated relatively by the cen trifugal elements 26 the markings 34 appear through the openings 83 and the absolute rotation of the parts causes the markings to appear as a band of red or other color on the flange 31, the width of the band being dependent upon the amount of the markings which appears through the openings 33 and this amount will 'vary in accordance with the position of the centrifugal elements 26 so that when these elements are in their limiting position the markings 34 will fully appear through the openings 33. i

In order to show the speed and angular advance of the driven. member the flange 3-- may have a series of lines 35 on the surface thereof to sh0.v the various widths of the band of color produced by the markings 34. These lines may be so arranged as to cooperate with a stationary index to indicate the degrees of angular advance and the (lifferent speeds.

Under certain conditions it may be desirable to have the driving and driven members locked together at.low speeds and for this purpose the balls 35 may be provided these balls being carried by extensions on the driven member and being pressed into suitable recesses in the driver by springs 36. It will be evident thatthe balls 35 will be forced out of the recesses, when the speed of rotation increases enough to produce the necessary centrifugal force in the members 26.

'hen the speed indicating device is used,

it is obvious that the load on the coupling must be substantially uniform.

It will be evident that changes may be made in the details of construction of the device, Without departing from the spirit of the invention as defined in the claims. and I therefore do not wish to be limited to the exact details which I have shown and described.

Having thus described my invention what I claim is 1. In a. device of the class described, the

, combination of a driving member having one or more axial. extensions, a driven member having axial extensions cotiperating with those on the driving member, said extensions having opposing faces normally arranged in angular relation to eaclrother, and centrifugal elements of circular cross-section engag ing each pair of said opposing faces and adapted to vary the angular relation of said members by changes in position and means continually acting to resist outward movement of the centrifugal elements.

2. In a device ofthe class described, the combination of a driving disk having axial extensions, a driven disk provided with axial extensions arranged to form pairs With the extensions on the driving disk, the opposite faces of the extensions forming each pair being arranged in angular relation, and centrifugal elements of circular cross-section arranged between each pair of said extensions and engaging the said faces thereof and adapted to vary the angular relation of said disks by separating said extensions by radial movement and means continually acting to resist outward movement of the cen trifugal elements.

3. In a device of the class described, the

combination of a driving disk having one or more axial extensions, a driven disk arranged alongside of the driving disk in axial alinement therewith and provided with axial extensions coiipcrating with the extensions on the driving disk, centrifugal elements of circular cross-section cooperating with said extensions and adapted to vary the angular relation of the disks by the separation of said axial extensions, springs for opposing the separation of said axial extensions, and latching means for forming a positive connection between said disks when at rest.

t. In a device of the class described, the combination of a driving disk, a driven shaft, an intermediate disk, a ratchet and pawl forming a connection between said intcrmediate disk and said driven shaft whereby relative momment thercbetween in one direction is permitted, and centrifugal disks arranged between said driving and intermediate disks and coijperating with parts on the driving and intermediate disks to vary the angular relation thereof.

In a device ofthe class described the combination of a driving member having a projection, a driven member having a projection, said projections having opposed faces, a centrifugal element interposed between said faces and arranged to separate the projections as it moves outward under the influence of centrifugal force and yieldforcing the projections to-;

ing means for v ward each other to thereby resist outward movement of the centrifugal element.

6. In a device of the class described, the

combination-of a driving member having a driven member having a projection, said projections having opposed centrifugal element and including coil 'faces and each having a seat for a spring, a springs one arranged in each of said seats. 16

centrifugal. element interposed between said In testimony "whereof I affix my signature. faces and arranged to separate the ,projec 5v-ti0ns as it moves outward under the infiu- EDWARD NEWTON once of centrifugal force and spring means Witnesses: for forcing the projections toward each other GRACE BOTTLER,

' to thereby resist outward movement of the H. D. E103. 

